"Two marine lieutenants battle a masked would-be world conqueror who uses electricity as a weapon."
Lee Powell
as Lieutenant Tom Grayson
Bruce Bennett
as Lieutenant Frank Corby
Eleanor Stewart
as Janet Warfield
Montagu Love
as General White
Hugh Sothern
as Ben Warfield
Sam Flint
as Colonel Grayson
Perry Ivins
as Crenshaw
Forrest Taylor
as Benson
John Picorri
as Professor Gould
Carleton Young
as Johnson, 'Aurora' Crewman
John Davidson
as Lin Wing
Henry Otho
as Sam Hedges, the Gardener
Reed Howes
as Parker--Sub Crewman
Tom London
as Henchman Wilson
Edmund Cobb
as Henchman Ellis
Alan Gregg
as Henchman Marco
Allen Matthews
as Todd--Submarine Captain
Benson Fong
as Gehorda Outlaw (uncredited)
Theodore Lorch
as 'Wing' Henchman (uncredited)
Victor Wong
as Mikichan (uncredited)
Larry Steers
as King (uncredited)
John Merton
as Thompson (uncredited)
Lester Dorr
as The Lightning (uncredited)
George DeNormand
as Marine Guard at Burton Street (uncredited)
Frank Baker
as General Snell (uncredited)
Jack Ingram
as Dirigible Radioman (uncredited)
Monte Montague
as Jacobs (uncredited)
Buddy Roosevelt
as Lieutenant of the 'Pawnee' (uncredited)
Al Taylor
as Bearded Sailor (uncredited)
Duke York
as Sam (uncredited)
Stanley Price
as The Lightning (voice) (uncredited)
George Magrill
as Jamison (uncredited)
Harry Strang
as Sgt. Bennett (uncredited)
Robert J. Wilke
as Marine in Shanghai (uncredited)
Lloyd Whitlock
as Dirigible Captain (uncredited)
Francis Sayles
as Renault (uncredited)
Jack Hendricks
as Marine (uncredited)
John English
Director
William Witney
